| 摘要 |
PURPOSE: A sub-channel switch matrix of digital transponder is provided to rapidly perform sub-channel switching by performing data extraction by the predetermined index. CONSTITUTION: N channel memories(130~140) are respectively composed with n DPRAM(Dual-Port Random Access Memories)s(131~135,141~145). The n multiplexers(151~155) perform the extracting and multiplexing the outputted data of the n DPRAM by the predetermined index. The n multiplexors outputs the multiplexed data to a digital dechannelizer(40). A switch control unit(30) designates index for extracting data by sub-channels among the saved data of the n DPRAM and switching.
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